Display screen or portion thereof with icon



FIG. 1 is a front view of a display screen or portion thereof with icon showing our new design in accordance with a first embodiment; and,

FIG. 2 is a front view of a display screen or portion thereof with icon showing our new design in accordance with a second embodiment.

The broken lines are for environmental purposes only form no part of the claimed design.

The dash dot lines are boundary lines separating claimed subject matter of the design from unclaimed subject matter of the design.

The solid black shown in FIG. 2 represents contrast in appearance. 

CLAIM The ornamental design for display screen or portion thereof with icon, as shown and described. 